Seat frame



FIG. 1 is an isometric view of the seat frame of my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof, the rear elevational view being a mirror image thereof;

FIG. 4 is a left side elevational view thereof the right side elevational view being a mirror image thereof,

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is an isometric view which view differs from FIG. 1 only by the broken line showing of a seat structure.

The broken line showing in the drawing figures is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a seat frame, as shown and described. 